ID 151733 - ParticleCache with read from file checked, re-opens with out-of-date errors

Problem summary

ParticleCache with 'read from file' checked will error when script
is re-opened -- 'Particle Cache out-of-date' -- even though
path to '.nkpc' files is valid.

If read from file is then un-checked & re-checked, the error
will clear. But the script errors again when re-opened
locally or on network.

Customer reported version

Nuke8.0v5

 

Linux Centos 6.5
 

Steps to reproduce

1:  Open your script containing the particle cache

2:  Set path in ParticleCache to
      '~/cache/particle_cache.####.nkpc'

3:   Click Render button in the node, renders '.nkpc' files

4:  Check 'read from file' and play in viewer, AOK

5:  Save script as 'yourscript.nk'

6:  Close and re-open Nuke 

 

Result:  ERROR --ParticleCache out-of-date

As a result, scripts saved with ParticleCache cannot render on
network as they always error when re-opened

 

The bug seems to be caused by having a card in the  emit input of the ParticleEmitter.

 

One possible workaround is to use WriteGeo to export the card to an '.abc' file, then load that '.abc' file into a ReadGeo and attach that to the emit input.

 

Nuke8.0v6 - MacOSX

Nuke8.0v1 - MacOSX
 

When re-opening a script, there shouldn't be any particle errors

 

Re-opening a script with a '.nkpc' may cause a 'Particle Cache out-of-date' error.